RADON CONCENTRATION AND EFFECTS DUE TO RADON DERIVATIVES IN NON-URANIUM MINES IN THE EC
Under this study contract, radon and daughter product measurements were carried out in the working and ventilating air flows of six more non-uranium mines, in addition to the measurements already taken. No measurements have as yet been taken in coal mines, since the equipment used to measure gamma radiation dose rates and continuously monitor radon-222 and daughter product concentrations is not blast proofed. From the data obtained from the work carried out under the two study contracts, the following points may be made: 1. Radon-222 and daughter product concentrations were measured in every fifth mine in the Federal Republic, excluding coal mines, over a period of three days in each case. 2. Assuming that the measured values are an average for the radon-222 and daughter product concentrations over the whole year, annual alpha energy values (radon-222 daughter products) to which mine workers are exposed were calculated. 3. In two workings, the annual alpha energy exposure values virtually reached the limits laid down by the ICRP and Euratom basic standards. Simple measures could be introduced there to ensure that levels were kept below these limits. 4. The results available to date indicate that it should be possible to observe the limits set for the inhalation of radon-222 daughter products in non-uranium mines, excluding coal mines, in the Federal Republic of Germany, without a great deal of further expenditure.
Bibliographic Reference: WRITE TO INSTITUT FUER STRAHLENHYGIENE DES BUNDESGESUNDHEITSAMTES, INGOLSTAEDTER LANDSTRASSE 1, D- 8042 NEUHERBERG (GERMANY) MENTIONING ISH-HEFT 43, 1984
Record Number: 1989123068900 / Last updated on: 1987-01-01
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